//计算体重指数
#include <stdio.h>
int main()
{
    int weight = 0;
    int high = 0;
    scanf("%d %d", &weight, &high);
    //计算
    float bmi = weight/(high/100.0)/(high/100.0);
    //输出
    printf("%.2f\n", bmi);
    return 0;
}